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Optimizing system performance in the event of feedback failure
Author(s) -
Chakraborty Debraj,
Hammer Jacob
Publication year - 2007
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200700177
Subject(s) - control theory (sociology) , controller (irrigation) , computer science , feedback control , signal (programming language) , feedback controller , control (management) , feedback loop , event (particle physics) , open loop controller , optimal control , closed loop , mathematics , mathematical optimization , control engineering , engineering , physics , artificial intelligence , computer security , quantum mechanics , agronomy , biology , programming language
The problem of maintaining acceptable performance of a perturbed control system during a disruption of the feedback signal is addressed. The objective is to maximize the time during which performance remains within desirable bounds without feedback, given that the parameters of the controlled system are within a specified neighborhood of their nominal values. The existence of an optimal open‐loop controller that achieves this objective is proved. It is also shown that a bang‐bang input can approximate the performance of the optimal controller. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)